如图,点A,B在x轴上,正方形
的顶点C的坐标为
,反比例函数
的图象经过
的中点E.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/77aa363d-f52d-475a-8e01-91f9c10df218.png?resizew=188)
(1)求反比例函数的表达式;
(2)点F在边
上,将
沿
折叠得到
,若点G落在y轴上,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c2a79d50db3c1cfeb46accc214ad72b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/15/77aa363d-f52d-475a-8e01-91f9c10df218.png?resizew=188)
(1)求反比例函数的表达式;
(2)点F在边
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72cb97395ebc5ee1b212afb7a97b985c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e37c2eab3fa989d8e986b7356eeb4a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
更新时间:2024-03-15 17:22:55
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适中
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【推荐1】如图,平面直角坐标系
中,一次函数
的图象与反比例函数
的图象交于点
、
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/d9994ce4-8358-494c-8b51-11bc7ad59aaf.png?resizew=233)
(1)求一次函数
和反比例函数
的解析式;
(2)若
轴上有一点
,满足
的面积为
,求点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13653a89d3a38346e1ddf4fd1602f85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/318d658e372b420f1efaef24a8c24b62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d3458e19ed2a8139afb33b4fe912909.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/d9994ce4-8358-494c-8b51-11bc7ad59aaf.png?resizew=233)
(1)求一次函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e13653a89d3a38346e1ddf4fd1602f85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a11cb104b04c4e6a1be700e81da279a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8da45c443af7994a26ffa9d8894e7262.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
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【推荐2】如图,将矩形
放置在平面直角坐标系中第一象限内,顶点A,D在y轴正半轴.已知
,
,
,反比例函数
的图象经过点C.
(2)把矩形
沿x轴正方向平移m个单位,使得矩形
的一个顶点落在反比例函数
的图象上,求m的值;
(3)把矩形
沿x轴正方向平移m个单位,再沿y轴正方向平移n个单位,使得矩形
的两个顶点落反比例函数
,请直接写出m,n之间的数量关系__________.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52705567101a48893de582656ef41527.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4202af9a6473fa4c2dd963b5226986e0.png)
(2)把矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4202af9a6473fa4c2dd963b5226986e0.png)
(3)把矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4202af9a6473fa4c2dd963b5226986e0.png)
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【推荐1】平移和翻折是初中数学两种重要的图形变换.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/377b7196-1cd5-4d99-aca3-23aeb6c8804d.png?resizew=325)
(1)平移运动
①把笔尖放在数轴的原点处,先向负方向移动
个单位长度,再向正方向移动
个单位长度,这时笔尖的位置表示什么数?用算式表示以上过程及结果是 .
A.
;B.
;C.
; D.
.
②一机器人从原点
开始,第
次向左跳
个单位,紧接着第
次向右跳
个单位,第
次向左跳
个单位,第
次向右跳
个单位,…,依次规律跳,当它跳
次时,落在数轴上的点表示的数是 .
(2)翻折变换
①若折叠纸条,表示
的点与表示
的点重合,则表示
的点与表示 的点重合;
②若数轴上
、
两点之间的距离为
(
在
的左侧,且折痕与①折痕相同),且
、
两点经折叠后重合,则
点表示 ,
点表示 .
③一条数轴上有点
、
、
,其中点
、
表示的数分别是
、
,现以点
为折点,将数轴向右对折,若点
对应的点
落在点
的右边,并且
,求点
表示的数.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/17/377b7196-1cd5-4d99-aca3-23aeb6c8804d.png?resizew=325)
(1)平移运动
①把笔尖放在数轴的原点处,先向负方向移动
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
A.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/279bce140b0a8aade6ca31f5645b8e5a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5e2e5b647e91bd94d349b58ee559657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19aaa8740da3b42d437f33e996943a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55ef6a978d821dd22e4954263169e896.png)
②一机器人从原点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d01dd350dc95f42f1883e0cc7aae084.png)
(2)翻折变换
①若折叠纸条,表示
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d01dd350dc95f42f1883e0cc7aae084.png)
②若数轴上
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d01dd350dc95f42f1883e0cc7aae084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
③一条数轴上有点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54d563011a22d0c2e884fb3288e7adb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7c314398e26ffc7164b82946eeb4273.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56024088e7d1e3bd5f5d17f4ddae48b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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【推荐2】如图,折叠长方形纸片
,使点
落在边
上的点
处,宽
,长
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6747441b260ca043446b5d472fece440.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/700d946aa8e33e2215f20586cb6ff923.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
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【推荐1】如图,在平行四边形ABCD中,过点A作AE⊥BC,垂足为E,连接DE,F为线段DE上一点,且∠AFE=∠B.
(1)在图中找出一对相似三角形,并说明理由;
(2)若AB=8,AD=
,AF=
,求AE的长.
(1)在图中找出一对相似三角形,并说明理由;
(2)若AB=8,AD=
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b27567d43c5b91382ee3d7ca708ee422.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41322821ce31416fdac8dd6e0aa41c71.png)
![](https://img.xkw.com/dksih/QBM/2020/6/5/2477977677258752/2479062611025920/STEM/a38b62e49e64477facd63f98b8b606df.png?resizew=214)
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